Hook EXT C Apex AXS
"With the ability to carry serious loads, triple mounts on the forks and three separate bottle cage fixings allow you to carry as much as you need with you.”
Bombtrack Hook EXT C Apex AXS
The Hook EXT C looks fast even when it’s standing still. Whether you're tearing up gravel races or heading out on an epic bikepacking trip, this bike is built for full-throttle fun with a grin guaranteed. The Hook EXT C comes with a lightweight T800 carbon frame, featuring optional internal cable routing and a full suite of signature mounting points - perfect for fast and light rides with frame bags in tow. Up front, the Seido MGV fork delivers generous tyre clearance, internal routing, and plenty of mount options for your gear. SRAM’s electronic Apex AXS 1x groupset handles shifting and braking, pairing a wide-range 12-speed 10 - 50T cassette with a 38T direct-mount chainring. At the cockpit, you’ll find Seido’s Tackle handlebar with a 16° flare, offering confident control and comfort. Rounding out the build are the Seido Sinus gravel wheels, wrapped in 40 mm WTB Venture tyres for dependable traction on any terrain.
Frame & Fork
- Color 1: Metallic black
- Color 2: Metallic red / black
- Frame: Toray T800 carbon blend, TA, rack / fender mounts, internal hub dynamo cable routing, 85.5 mm T47 BB shell, UDH derailleur hanger, optional full internal cable routing
- Fork: Seido MGV full carbon, TA, 1.1/2'' - 1.1/8'', fender / triple cage mounts, 180 mm max rotor size, lowrider rack compatible, internal hub dynamo cable routing
Drivetrain & Shifting
- Rear derailleur: Sram X1 Eagle AXS, clutch, long cage
- Chain: Sram GX Eagle, 1/2'' x 11/128''
- Cassette: Sram NX Eagle PG-1230 12-speed,
11 - 50 T - Crankset: Sram Apex Wide, DUB spindle
- Chainring: Sram Apex, 12-speed, 38 T
- Bottom bracket: Sram DUB T47 85.5 mm
Wheels & Tires
- Front hub: Bombtrack Tau sealed hub, 6-bolt disc
- Rear hub: Bombtrack Tau sealed hub, HG body, 6-bolt disc
- Through axles: 12 x 100 mm / 12 x 142 mm
- Front rim: Seido Sinus i21, tubeless ready, 32H
- Rear rim: Seido Sinus i21, tubeless ready, 32H
- Front tire: WTB Venture TCS Light 40-622, tubeless ready
- Rear tire: WTB Venture TCS Light 40-622, tubeless ready
Cockpit
- Handlebar: Seido Tackle drop bar, 31.8 mm, 16° flare
- Grips: Bombtrack Escape bar tape
- Stem: Seido Scatter forged aluminium stem, -7°
- Headset: Sealed integrated headset, 1.1/2'' - 1.1/2''
Seats & Seatpost
- Seat: Seido Course seat
- Seat post: Seido Yew aluminium seatpost, 27.2 mm x 350 mm
- Seat clamp: Bombtrack Prime 31.8 mm
Brakes
- Brake levers: Sram Apex AXS double tap hydraulic
- Brakes: Sram Apex flat mount hydraulic disc brakes
- Rotors: Sram Centerline 180 mm front and 160 mm rear rotor
Weight & Limits
- Complete weight: 9.9 kg (size M)
- Weight frame: 1380 g frame (size M, incl. TA, hanger)
- Weight fork: 550 g fork (300 mm steerer, incl. TA)
- Maximum rider weight: 115 kg incl. luggage
- ASTM riding condition: 2
The Hook EXT C looks fast even when it’s standing still. Whether you're tearing up gravel races or heading out on an epic bikepacking trip, this bike is built for full-throttle fun with a grin guaranteed. The Hook EXT C comes with a lightweight T800 carbon frame, featuring optional internal cable routing and a full suite of signature mounting points - perfect for fast and light rides with frame bags in tow. Up front, the Seido MGV fork delivers generous tyre clearance, internal routing, and plenty of mount options for your gear. SRAM’s electronic Apex AXS 1x groupset handles shifting and braking, pairing a wide-range 12-speed 10 - 50T cassette with a 38T direct-mount chainring. At the cockpit, you’ll find Seido’s Tackle handlebar with a 16° flare, offering confident control and comfort. Rounding out the build are the Seido Sinus gravel wheels, wrapped in 40 mm WTB Venture tyres for dependable traction on any terrain.
Frame
- BB standard: T47 - 85.5 mm shell width
- Frame max tire clearance w/o fender: 57-584 / 45-622
- Frame front derailleur compatible: yes
- Front derailleur clamp diameter:
bolt on FD hanger included in frame - Brake mount rear: FM 160 / 180
- Maximum rotor clearance rear: 180 mm
- Frame thickness rear brake mount: 30 mm
- Bike trailer: not approved
- Seat tube mounted child seat: not approved
- ISO testing standard: Road
Fork
- Fork max tire clearance w/o fender:
57-584 / 57-622 - Fork steerer inner diameter: 23.6 mm
- Headset standard (S.H.I.S.):
IS52 / 28.6 | IS52 / 40 - Headset crown race angle: 36°
- Brake mount front: FM 160 / 180
- Maximum rotor clearance front: 180 mm
Drivetrain
- Maximum chainring clearance 1x:
42 T with 47 mm chainline - Maximum chainring clearance 2x:
48 / 31 T with 47 mm chainline - Crankarm:
S - M 170 mm
L 175 mm - Q Factor: 150 mm
- BCD crank: 8 bolt direct mount (Sram compatible)
- Chainring offset: 6 mm
- Chainline: 47.5 mm
Seat & Seatpost
- Seat post diameter: 27.2 mm
- Seat post offset: 0 mm
- Seat post length: 350 mm
- Seat clamp diameter: 31.8 mm
Cockpit
- Stem length:
S - M 90 mm
L 100 mm - Stem angle: -7°
- Headset spacers: 1 x 10 mm, 2 x 5 mm
Wheels
- Spoke count (front / rear): 32 / 32
- Front through axle:
12 mm x 100 mm, 1.5 thread pitch - Rear through axle:
12 mm x 142 mm, 1.0 thread pitch - ERD: 587.5 mm
- Front hub PCD: 58 mm
- Rear hub PCD: 58 mm
- Front hub flange distance / offset:
56.5 mm center to center / 6.6 mm - Rear hub flange distance / offset:
51 mm center to center / 8.8 mm
Spare Parts
- Derailleur hanger: Sram UDH
- Frame small parts: BT-CR-014 / BT-CR-015
- Hub end caps front: BT-HC-014
- Hub end caps rear: BT-HC-017
- Cassette body: BT-CB-006
- Through axle front: BT-TA-F-601
- Through axle rear: BT-TA-R-606
Geometry
Frame Bag Templates
